| 基于宏块条互相关的MPEG-2 VBR视频统计复用 |
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| 引用本文： | 潘健,施建良,余松煜.基于宏块条互相关的MPEG-2 VBR视频统计复用[J].上海交通大学学报,1999,33(4):394-397. |
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| 作者姓名： | 潘健 施建良 余松煜 |
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| 作者单位： | 上海交通大学,图像通信和信息处理研究所,上海,200030 |
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| 摘 要： | 针对ＭＰＥＧ－２编码ＶＢＲ视频业务，提出了一种简便的统计复用方法，该方法对不同业务中宏块条码率样本进行互相关，根据互相关函数局部极小值所对应的码率样本偏移量，将不同业务的宏块条起始位置相对平移，并实现业务累加，从信元丢失率的角度与帧平移法统计复用进行了对比，结果表明，本方法的信元丢失率明显减小，并且随复用业务数量的增加，复用效果进一步提高。
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| 关 键 词： | MPEG－2 宏块条 VBR视频业务 统计复用 图像处理 |
| 修稿时间： | 1998-08-30 |
Statistical Multiplexing of MPEG-2 VBR Video Based on Correlation of Slice |
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| PAN Jian,SHI Jian-liang,YU Song-yu.Statistical Multiplexing of MPEG-2 VBR Video Based on Correlation of Slice[J].Journal of Shanghai Jiaotong University,1999,33(4):394-397. |
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| Authors: | PAN Jian SHI Jian-liang YU Song-yu |
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| Abstract: | A simple algorithm of the statisitical multiplexing of MPEG 2 VBR video was proposed. Based on the local minimal value of correlation of slice bitrate samples, it shifted the slice between different sources according to position of the minimal value. Compared it with the frame shifted algorithm by cell lose ratio (CLR), the new method provided remarkable reduction in CLR and further improvement with the increase of sources. |
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| Keywords: | MPEG 2 slice correlation cell lose ratio(CLR) variable bit rate (VBR) |
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